// 字体
 fnResize();
  window.onresize = function () {
    fnResize()
  };
  function fnResize() {
    let deviceWidth = document.documentElement.clientWidth || window.innerWidth;
    console.log(deviceWidth);
    if (deviceWidth >= 750) {
      deviceWidth = 750;
    }
    if (deviceWidth <= 320) {
      deviceWidth = 320
    }
    document.documentElement.style.fontSize = (deviceWidth / 7.5*2) + 'px';
    console.log( document.documentElement.style.fontSize);
  }

/*/storage 存储
sessionStorage.setItem('currentIndex', 0)
// 获取
index=sessionStorage.getItem('currentIndex');
// 删除一个
sessionStorage.removeItem("currentIndex");
// 删除全部
sessionStorage.clear();*/
